Buggy code:
public class ContentDBConnector { private Connection sqlConnection ; private String contentTable = ContextConfig . getInstance ( ) . CONTENT_DB_contentTABLE_NAME ; private String jobTable = ContextConfig . getInstance ( ) . CONTENT_DB_jobTABLE_NAME ; String Query_FOR_CREATE_TRIGGER = ( ( ( ( "CREATE<seq2seq4repair_space>TRIGGER<seq2seq4repair_space>update_trigger<seq2seq4repair_space>AFTER<seq2seq4repair_space>INSERT<seq2seq4repair_space>ON<seq2seq4repair_space>" + ( contentTable ) ) + "<seq2seq4repair_space>FOR<seq2seq4repair_space>EACH<seq2seq4repair_space>ROW<seq2seq4repair_space>BEGIN<seq2seq4repair_space>INSERT<seq2seq4repair_space>INTO<seq2seq4repair_space>" ) + ( jobTable ) ) + "(doc_id,<seq2seq4repair_space>working_status,<seq2seq4repair_space>complete_status,<seq2seq4repair_space>client_jobstatus)<seq2seq4repair_space>VALUES<seq2seq4repair_space>(NEW.doc_id,<seq2seq4repair_space>0,<seq2seq4repair_space>0,<seq2seq4repair_space>0);" ) + "END;" ; public ContentDBConnector ( ) { } private void setTrigger ( ) { } public boolean add ( Document document ) { } public boolean delete ( Document document ) { } public Document query ( String colName , String value ) { } public boolean update ( String columnName , int id , int status ) { } public ArrayList < Integer > checkUpdates ( String columnName , int id ) { } private boolean connect ( ) { } private boolean disconnect ( ) { } private void cleanJobTable ( ) { } private void reConnect ( ) { } private String escape ( String text ) { } private String unescape ( String text ) { } public ArrayList < Document > queryFromDate ( String startDate , String endDate , boolean bNaver , boolean bDaum , boolean bNate ) { } public ArrayList < Integer > queryClientJobCandidates ( int nRows ) { ResultSet resultSet = null ; ArrayList < Integer > docID_List = new ArrayList < Integer > ( ) ; try { Statement stmt = sqlConnection . createStatement ( ) ; <START_BUG> resultSet = stmt . executeQuery ( ( ( ( ( "select<seq2seq4repair_space>*<seq2seq4repair_space>from<seq2seq4repair_space>" + ( jobTable ) ) + "<seq2seq4repair_space>where<seq2seq4repair_space>client_jobstatus<seq2seq4repair_space>=<seq2seq4repair_space>0<seq2seq4repair_space>limit<seq2seq4repair_space>" ) + nRows ) + ";" ) ) ; <END_BUG> while ( resultSet . next ( ) ) { docID_List . add ( resultSet . getInt ( "doc_id" ) ) ; } for ( int i = 0 ; i < ( docID_List . size ( ) ) ; i ++ ) { stmt . execute ( ( ( ( "update<seq2seq4repair_space>" + ( jobTable ) ) + "<seq2seq4repair_space>set<seq2seq4repair_space>client_jobstatus<seq2seq4repair_space>=<seq2seq4repair_space>1<seq2seq4repair_space>where<seq2seq4repair_space>doc_id<seq2seq4repair_space>=<seq2seq4repair_space>" ) + ( docID_List . get ( i ) ) ) ) ; } stmt . close ( ) ; } catch ( SQLException e ) { e . printStackTrace ( ) ; } return docID_List ; } public ArrayList < String > queryCategoryList ( List < Integer > termLinkedDocIds ) { } public ArrayList < String > queryTitle ( List < Integer > termLinkedDocIds ) { } }

Fix:
resultSet = stmt . executeQuery ( ( ( ( ( "select<seq2seq4repair_space>*<seq2seq4repair_space>from<seq2seq4repair_space>" + ( jobTable ) ) + "<seq2seq4repair_space>where<seq2seq4repair_space>client_jobstatus<seq2seq4repair_space>=<seq2seq4repair_space>0<seq2seq4repair_space>and<seq2seq4repair_space>complete_status<seq2seq4repair_space>=<seq2seq4repair_space>1<seq2seq4repair_space>limit<seq2seq4repair_space>" ) + nRows ) + ";" ) ) ;